Number of permutations of [n] that have no prime fixed points.
A247978
Number of permutations of [n] that have no prime fixed points.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =14a(5) =64a(6) =426a(7) =2790a(8) =24024a(9) =229080a(10) =2399760a(11) =25022880a(12) =312273360a(13) =3884393520a(14) =56255149440a(15) =869007242880
External references
- oeis: A247978